NHTSA ID Number: 10183218
Manufacturer Communication Number: N202308320
Summary
Customer Satisfaction Program – Certain 2020 model year Cadillac
CT4, CT5, and Chevrolet
Corvette vehicles, equipped with the Cadillac
User Experience with embedded navigation or the Infotainment 3 premium system w/navigation (RPO IOT), may have a condition where the radio display is non-functional except for the backup camera. The embedded Multi-Media Controller (eMMC) firmware contains a defect that could cause a continuous rebooting condition. Rebooting will continue even after shutdown, resulting in a battery drain for the affected vehicle, and possibly a dead battery and a no-start condition. Dealers will replace the radio receiver.
Parts
| Quantity | Part Name | Part No. |
| 1 | Radio Receiver | 84865578 |
SEOCONTENT-START
GLOBAL SAFETY FIELD INVESTIGATIONS
DCS5532
URGENT – DISTRIBUTE IMMEDIATELY
Date: October 1, 2020
Subject: N202308320 – Customer Satisfaction Program
Radio Display Inoperative Except For Backup Camera
Models: 2020 Cadillac
CT4 & CT5
2020 Chevrolet
Corvette
Equipped with Infotainment 3 Premium System W/Navigation
(RPO IOT)
To: All General Motors
Dealers
General Motors
is releasing Customer Satisfaction Program N202308320
today. The total number of U.S. vehicles involved is approximately 401.
Please see the attached bulletin for details.
Customer Letter Mailing
The customer letter mailing will begin late-October 2020.
Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH) screen will
be updated October 2, 2020 or sooner. A list of involved vehicles in dealer new
inventory is attached to this message. Please hold all warranty transactions until IVH
has been updated.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS
Customer Satisfaction Program
N202308320 Radio Display Inoperative Except For Backup Camera
Copyright 2020 General Motors
. All Rights Reserved. Page 1 of 3
Release Date: October 2020 Revision: 00
Attention: All involved vehicles that are in dealer inventory must be held and not delivered to customers, dealer
traded, or used for demonstration purposes until the repair contained in this bulletin has been performed
on the vehicle.
This program is in effect until October 31, 2022.
Make Model
Model Year
From To RPO Description
Cadillac
CT4
2020 2020 IOT
Infotainment 3 Premium System
W/Navigation
Cadillac
CT5
Chevrolet
Corvette
Involved vehicles are marked “open” on the Investigate Vehicle History screen in GM Global Warranty Management
system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections
and/or repairs.
Condition
Certain 2020 model year Cadillac
CT4, CT5, and Chevrolet
Corvette vehicles, equipped with the Cadillac![]()
User Experience with embedded navigation or the Infotainment 3 premium system w/navigation (RPO
IOT), may have a condition where the radio display is non-functional except for the backup camera. The
embedded Multi-Media Controller (eMMC) firmware contains a defect that could cause a continuous
rebooting condition. Rebooting will continue even after shutdown, resulting in a battery drain for the
affected vehicle, and possibly a dead battery and a no-start condition.
Correction Dealers will replace the radio receiver.
Parts
Quantity Part Name Part No.
1 Radio Receiver 84865578
The parts required for this program are on restriction and need to be obtained from an Electronic Service Center (ESC).
Please refer to your “involved vehicles listing” before ordering parts. These parts will be on Order Writing control and all
orders placed through GMCCA will cancel.
Warranty Information
Labor
Operation Description
Labor
Time
Trans.
Type
Net
Item
9105311
Replace Radio:
Corvette
CT 4
CT 5
ADD: USB Programming
.8
1.0
.7
.3
ZFAT N/A
Service Procedure
Replace the radio receiver. Refer to Radio Replacement in SI.
Dealer Responsibility
All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers’ possession
and subject to this program must be held and inspected/repaired per the service procedure of this bulletin before
customers take possession of these vehicles. Involved vehicles must be held and not delivered to customers, dealertraded,
released to auction, used for demonstration, or any other purpose.
All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System
(CPOIS) will be de-certified and must be held and remedied per the service procedure in this bulletin. Upon submitting
an accepted/paid warranty transaction in the Global Warranty Management (GWM) system, the vehicle can be re-certified
for sale within the CPOIS system, or once again be used in the CTP program.
Dealers are to service all vehicles subject to this program at no charge to customers, regardless of mileage, age of vehicle,
or ownership, through October 31, 2022. Customers who have recently purchased vehicles sold from your vehicle
Customer Satisfaction Program
N202308320 Radio Display Inoperative Except For Backup Camera
Page 2 of 3
inventory, and for which there is no customer information indicated on the involved vehicle listing, are to be contacted by
the dealer. Arrangements are to be made to make the required correction according to the instructions contained in this
bulletin. A copy of the customer letter is provided in this bulletin for your use in contacting customers. Program followup
cards should not be used for this purpose, since the customer may not as yet have received the notification letter.
In summary, through October 31, 2022, whenever a vehicle subject to this field action enters your vehicle inventory you
must take the steps necessary to ensure the program correction has been made before selling the vehicle. In addition,
for vehicles entering your facility for service, you are required to ensure the customer is aware of the open field action
and make every reasonable effort to implement the program correction as set forth in this bulletin prior to releasing the
vehicle.
Dealer Reports
For dealers with involved vehicles, a listing with involved vehicles has been prepared and will be provided to U.S. and
Canadian dealers through the GM GlobalConnect Recall Reports or sent directly to export dealers. The listing may
contain customer names and addresses obtained from Motor Vehicle Registration Records. The use of such motor
vehicle registration data for any purpose other than follow-up necessary to complete this program is a violation of law in
several states/provinces/countries. Accordingly, you are urged to limit the use of this report to the follow-up necessary to
complete this program.
Courtesy Transportation – For USA & Canada
Courtesy transportation is available for customers whose vehicles are involved in a product program and still within the
warranty coverage period. See General Motors
Service Policies and Procedures Manual for courtesy transportation
program details.
Customer Notification
USA & Canada – General Motors
will notify customers of this program on their vehicle (see copy of customer letter included
with this bulletin).
Export – Letters will be sent to known owners of record located within areas covered by the US National Traffic and Motor
Vehicle Safety Act. For owners outside these areas, dealers should notify customers using the attached sample letter.
GM bulletins are intended for use by professional technicians, NOT a “do-it-yourselfer”. They are written to inform these technicians of
conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained
technicians have the tools, equipment, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT
assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your dealer for information on whether your
vehicle may benefit from the information.
We Support
Voluntary Technician
Certification
Customer Satisfaction Program
N202308320 Radio Display Inoperative Except For Backup Camera
Page 3 of 3
October 2020
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors
Customer:
We have learned that your 2020 model year Cadillac
CT4, CT5, or Chevrolet
Corvette may have a condition where the
radio display is non-functional except for the backup camera.
Your satisfaction with your Cadillac
CT4, CT5, or Chevrolet
Corvette is very important to us, so we are announcing a
program to prevent this condition or, if it has occurred, to fix it.
What We Will Do: Your GM dealer will replace the radio receiver. This service will be performed for you at no charge
until October 31, 2022. After that, any applicable warranty will apply.
What You Should Do: To limit any possible inconvenience, we recommend that you contact your dealer as soon as
possible to schedule an appointment for this repair. By scheduling an appointment, your dealer can ensure that the
necessary parts will be available on your scheduled appointment date.
If you have any questions or concerns that your dealer is unable to resolve, please contact the appropriate Customer
Assistance Center at the number listed below.
Division Number Text Telephones (TTY)
Cadillac
1-800-458-8006 1-800-833-2622
Chevrolet
1-800-222-1020 1-800-833-2438
Puerto Rico – English 1-800-496-9994
Puerto Rico – Español 1-800-496-9993
Virgin Islands 1-800-496-9994
We truly appreciate you taking the time to remedy your vehicle as we know your time is valuable. We want you to know
that we will do our best, throughout your ownership experience, to ensure that your GM vehicle provides you many
miles of enjoyable driving.
Neelie O’Connor
Global Executive Director
Customer Experience Operations
N202308320
SEOCONTENT-END
3 Affected Products
1 Associated Document
Manufacturer Communications
MC-10183218-9999.pdf 101.695KB
- Bright, high-resolution 5” glass capacitive touchscreen display lets you easily view your route
- Get more situational awareness with alerts for school zones, speed changes, sharp curves and more
- View food, fuel and rest areas along your active route, and see upcoming cities and milestones
- View Tripadvisor traveler ratings for top-rated restaurants, hotels and attractions to help you make the most of road trips
- Directory of U.S. national parks simplifies navigation to entrances, visitor centers and landmarks within the parks
- 【9 Inch Large Display】The 9 inch CarPlay screen for car features a full HD touchscreen, providing clearer maps, calls, and music controls. The wide display improves visibility, making driving safer and more convenient while offering a smarter upgrade for any vehicle.
- 【Wireless CarPlay & Android Auto】This portable CarPlay screen supports wireless CarPlay and Android Auto, letting you easily access navigation, calls, messages, and music without cables. Enjoy hands-free control through your smartphone while staying focused on the road.
- 【GPS Navigation & Voice Control】The CarPlay screen offers built-in GPS navigation support and voice control compatibility. Quickly find routes, play music, and send messages with Siri or Google Assistant, ensuring smarter, safer driving without distractions.
- 【Mirror Link & Multiple Audio Options】The CarPlay screen supports phone mirror link plus 4 audio output modes: FM transmission, AUX, Bluetooth, and built-in speaker. This portable car play screen ensures flexible, high-quality sound in any car audio system.
- 【Easy Plug & Play Installation】The portable CarPlay screen connects via cigarette lighter and installs in seconds with a stable suction-cup base. No complicated wiring is required—just plug and play for a simple, reliable, and convenient car upgrade.
- 【Lifetime Free Map Updates】The GPS navigator comes preloaded with the latest 2026 edition maps of North America (USA, Canada, Mexico).Enjoy lifelong free updates, guaranteeing your navigation for car and truck journeys is always accurate and reliable
- 【Smart Voice Guidance & Real-Time Alerts】Keep your eyes on the road with clear, turn-by-turn voice prompts. This car gps proactively alerts you to upcoming turns, traffic lights, speed cameras, and changes in speed limits for a safer drive
- 【Custom Routes for Your Vehicle's Size】Input your vehicle's exact height, weight, and length. Our gps navigation for car then calculates the safest route, avoiding low bridges, narrow roads, and weight-restricted streets unsuitable for trucks or RVs
- 【Intelligent Features for Effortless Use】Easily find destinations by address, ZIP code, or points of interest. The built-in FM transmitter broadcasts voice guidance through your car's stereo system
- 【7-Inch HD Touchscreen & Complete Kit】Features a vibrant 7-inch responsive touchscreen for clear viewing. This car gps navigation system is a complete ready-to-use kit including charger, USB cable, mount, and sunshade. Install instantly and hit the road
- 7” high-resolution navigator includes map updates of North America .Special Feature:Easy-To-Read Display; Voice Assist; Hands-Free Calling; Live Traffic and Weather; Traffic Cams and Parking; Smart Notifications,Driver Alerts; Tripadvisor; National Parks Directory; Find Places by Name; Garmin Real Directions Feature.
- Hands-free calling when paired with your compatible smartphone with BLUETOOTH technology and convenient Garmin voice assist lets you ask for directions to places you want to go
- Road trip–ready features include the HISTORY database of notable sites, a U.S. national parks directory, Tripadvisor traveler ratings and millions of Foursquare POIs
- Driver alerts for things such as school zones, sharp curves and speed changes help encourage safer driving and increase situational awareness
- Access live traffic, fuel prices, parking, weather and smart notifications when you pair this navigator with your compatible smartphone running the Garmin Drive app
- CarPlay and Android Auto: This plug-in device connects to your phone via Bluetooth and WiFi. To use CarPlay, connect an iPhone; to use Android Auto, connect an Android phone. Simply connect it to your smartphone and access map navigation, calling, email, notifications, music, and more.
- Online Maps and Real-Time GPS Navigation with Voice Control: When connected to a smartphone, the portable Apple CarPlay display delivers precise real-time positioning and zero-delay GPS navigation. Supports real-time navigation via apps like Google Maps and Waze (non-preinstalled apps require phone connection). Equipped with the latest voice control technology, it enables map navigation, calls, emails, notifications, music, and more through Siri/Google Assistant.
- OTA Updates: Keep your device up to date with over-the-air firmware updates, so you’re always one step ahead. This wireless CarPlay screen automatically pushes new system updates, ensuring long-term compatibility between your phone and Apple CarPlay, Android Auto, and other in-car electronics.
- Night Vision Backup Camera: A waterproof rear-view camera with night vision capabilities that connects to your in-car display. The backup camera accurately and clearly records your entire driving journey, providing you with comprehensive safety protection. The rear-view camera cable works in sync with your backup lights, making installation extremely convenient.
- Phone Mirroring Connection and Four Audio Outputs: This 9-inch CarPlay screen supports mirroring for both iOS and Android phones. The Q9S double-DIN car stereo integrates CarPlay functionality while supporting Bluetooth audio, built-in speakers, FM radio, and an AUX port. Enjoy clear, stable music even in noisy environments. Connecting your phone via Bluetooth to the car's Bluetooth system for audio playback through the car speakers is the optimal choice.
Last update on 2026-06-26 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.





